It all depends on your location. What's the average income where you are? Where is your closest competitor?
We charge $160 for the Mini 3, and people pay it. But we are located in a fairly wealthy town, with no real competitors.

i would have to buy opening tools for that ipad and i am not entirely sure I could disassemble it
no real competition, if i see that someone else has a better price for that specific repair, I refer them over there

Besides what everyone else has said, there is a very real possibility that you get in a ton of trouble too. It's not like the teacher will know who cheated off of who (it depends, really). I've seen it happen where both students get in trouble, sadly.

You might have some clearance, they don’t usually sell out that quickly on black friday and even if sell out on black friday they’ll be rolling out more (at an extra price)
Depending or not if its worth it is based a lot of how you want to pass your congoing experience, do you want to attend a lot of panels and special events with limited space? then it is very worth it, if you just plan to explore and look around the main hall or artists alley then it isn’t worth it (in my opinion those 500 dollars could be used toward merch lol)

for a hotel i recommend you get a couple roommates, the 500 dollars a day for a hotel block hotel is very worth it as long as you can find people to room with you and split the cost.

Money depends a lot on what you want to spend, you can potentially go spending 200 dollars the whole con, (ubers+food) it all depends on what you want to buy inside of the con. (figures, posters, merch)

if you have more questions theres a ton of people to help you out on the anime expo discord
just be sure to use the appropriate channels and not just post your questions on general

I read through a lot of his comics before I really got the grasp of what he was thinking, I stopped at the fucking "can't have welfare and immigration" one. I honestly think this guy is just an obtuse and gullible idiot with poor taste.